Originally Posted by fdcg27
The real question here is what control regime the A320 was in when ditched into the river.
Read QuagmireAirline's post in https://www.pprune.org/tech-log/594787-sully-s-flare-hudson-airbus-phugoid-feedback.html where he cites the Performance Study, etc., and, yes, Airbus's control laws in alpha-protect prevented a full flare and Sully did a good job of trying to get the fuselage to ideal ditching pitch angle. Sully did a lot of things right, I have no doubt. Also read the NTSB accident report for a better summary than I care to provide here. Summary is at: https://www.ntsb.gov/investigations/accidentreports/pages/aar1003.aspx and Full report at: https://www.ntsb.gov/investigations/AccidentReports/Reports/AAR1003.pdf
Originally Posted by fdcg27
His focus would have been upon the forced landing site and not precise speed control.
Originally Posted by DoubleWasp
Uneducated question: Was there something about that situation that would have not made it possible for him to maintain "Green Dot" speed?
It's true Sully may have been trying to find a spot on the river safe to land on. However, this would have been only necessary in the later stages, nearer the river. He came very close to a stall spin accident by flying nose-high (low airspeed), and Green Dot allows greatest range (efficiency). Green Dot is there for a reason, and they are trained to use it.
No, there is no excuse for not flying Green Dot.
The real question here is what control regime the A320 was in when ditched into the river.
Read QuagmireAirline's post in https://www.pprune.org/tech-log/594787-sully-s-flare-hudson-airbus-phugoid-feedback.html where he cites the Performance Study, etc., and, yes, Airbus's control laws in alpha-protect prevented a full flare and Sully did a good job of trying to get the fuselage to ideal ditching pitch angle. Sully did a lot of things right, I have no doubt. Also read the NTSB accident report for a better summary than I care to provide here. Summary is at: https://www.ntsb.gov/investigations/accidentreports/pages/aar1003.aspx and Full report at: https://www.ntsb.gov/investigations/AccidentReports/Reports/AAR1003.pdf
Originally Posted by fdcg27
His focus would have been upon the forced landing site and not precise speed control.
Originally Posted by DoubleWasp
Uneducated question: Was there something about that situation that would have not made it possible for him to maintain "Green Dot" speed?
It's true Sully may have been trying to find a spot on the river safe to land on. However, this would have been only necessary in the later stages, nearer the river. He came very close to a stall spin accident by flying nose-high (low airspeed), and Green Dot allows greatest range (efficiency). Green Dot is there for a reason, and they are trained to use it.
No, there is no excuse for not flying Green Dot.